CODEWITHSUNDEEP
androidfragmentaugmented-realityarcoresceneform
Karasa
Karasa

Reputation: 31

ArCore ArFrame Hide Camera Image but preserve HandMotion Animation

Is there any way to preserve the hand motion animation when initializing ArCore but simultaneously getting rid of the camera picture - which is displayed behind the hand motion animation.

I am using 

<fragment
    android:id="@+id/Ar"
    android:name="com.google.ar.sceneform.ux.ArFragment"

and currently I am hiding the whole Fragment with:

fragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.Ar);

    fm = getSupportFragmentManager();

    fm.beginTransaction()
            .setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out)
            .hide(fragment)
            .commit();

Any help is appreciated.

Upvotes: 3

Views: 212

Answers (1)

Andy Jazz
Andy Jazz

Reputation: 58113

The easiest way to hide the ArCamera feed in ARCore/Sceneform app, while a "temporary" view with Hand Motion Animation is running, is to use EXPOSE_HARDWARE_BUFFER enum's case. In order to return the camera feed back, tap on the screen to activate BIND_TO_TEXTURE_EXTERNAL_OES enum case. Here's the code:

class MainActivity : AppCompatActivity() {
    private lateinit var arFragment: ArFragment
    private lateinit var session: Session
    private lateinit var texture: Texture

    private fun configure(session: Session, withFrag: ArFragment) {
        val config = Config(session)
        config.updateMode = Config.UpdateMode.LATEST_CAMERA_IMAGE
        config.textureUpdateMode = Config.TextureUpdateMode.EXPOSE_HARDWARE_BUFFER
        session.configure(config)
        withFrag.arSceneView.setupSession(session)

        withFrag.arSceneView.scene.setOnTouchListener { _, _ ->
            config.textureUpdateMode = Config.TextureUpdateMode.BIND_TO_TEXTURE_EXTERNAL_OES
            session.configure(config)
            return@setOnTouchListener true
        }
    }
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)
        arFragment = supportFragmentManager.findFragmentByTag("frag") as ArFragment
        this.session = Session(this)
        configure(session, arFragment)
        addCelestialBodyToSceneIn(arFragment)
    }
    private fun addCelestialBodyToSceneIn(frag: ArFragment) {
        Texture
            .builder()
            .setSource(this, R.drawable.mars)
            .build()
            .thenAccept {
                this.texture = it
                MaterialFactory.makeOpaqueWithTexture(this, texture)
                    .thenAccept { shader ->
                        val sphere = ShapeFactory.makeSphere(0.3f, Vector3(), shader)
                        val node = Node()
                        node.renderable = sphere
                        node.worldPosition = Vector3(0f, 0f,-2f)
                        frag.arSceneView.scene.addChild(node)
                    }
            }
    }
}

Upvotes: 0

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